I have beached my ski 1000 times and landed about 900 flat backflips and no issues w/ my pump shoe... I have even broken my hull on the bottom even and nothing...
I guess I have gotten lucky then...??
I ate it hard when my OEM shoe failed at WOT. It was caused by my stock intake grate loosing a screw up front (pump shoe theads). The extra drag the twisted grate was putting on the shoe ripped half of the shoe from the hull.
I went to the Aluminum one sold by snowxr ???, it went in easily. I havn't used it much as my flywheel went south soon after.
I certainly wouldn't remove a good stock unit to go aluminum.